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SS8P vs NVX NSW82v3 8" Car Subwoofer

These are not the same kind of product. The SS8P is a powered under-seat enclosure with a built-in 100W RMS amp, so it works with a factory stereo and needs no separate amplifier. The NVX NSW82v3 is a bare 8-inch dual 2-ohm driver rated 400W RMS that needs an external amp and a box. On price the NVX is $79.99 at Best Buy as of November 5, 2026, and the SS8P has ranged from $86.35 to $99.95 since October 29, 2026. Buy the SS8P for a simple space-saving upgrade; buy the NVX only if you already have an amp and enclosure.

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SS8P

SS8P

4.8· 61 ratings

Choose the SS8P if you want bass with no separate amp, no box build and a 2.8-inch profile that fits under a seat.

Pros
  • All-in-one: amp, enclosure and sub in one unit
  • 2.8-inch profile slides under most seats
  • High-level inputs work with a factory head unit
  • Remote bass knob and auto turn-on
    • Cons
    • Only 100W RMS, modest output
    • Single 4-ohm voice coil limits wiring options
    • Not waterproof
    • May not fit under low seats such as a Miata
    NVX
    NVX NSW82v3 8" N-Series v3 Dual 2-Ohm Car Subwoofer

    NVX NSW82v3 8" Car Subwoofer

    NVX NSW82v3 8" N-Series v3 Dual 2-Ohm Car Subwoofer

    4· 1 rating
    $79.99at Best BuyObserved Nov 5, 2026, 6:48 PM
    Visit store

    Choose the NVX NSW82v3 if you already have an amplifier and a sealed or ported 8-inch enclosure and want a driver rated for 400W RMS.

    Pros
    • 400W RMS and 800W peak for much more output
    • Dual 2-ohm coils allow 1-ohm or 4-ohm wiring
    • 90 oz magnet and 10.5mm Xmax
    • Cheaper at $79.99 at Best Buy as of November 5, 2026
    Cons
    • No amp, box or wiring included
    • 4.98-inch depth needs a real enclosure
    • No grille included
    • Not marine rated

    What separates them

    SS8PNVX NSW82v3 8" Car Subwoofer
    TypePowered subwoofer in a slim enclosure with built-in ampBare subwoofer driver, no amp or box
    RMS power handling100W RMS (400W peak)400W RMS (800W peak)
    InstallationHigh-level and RCA inputs, auto-sensing turn-on, remote bass knobNeeds external amp, wiring and a box
    Mounting depth2.8 in thick, under-seat4.98 in top-mount depth, needs a cutout of 7.12 in
    Impedance and wiringSingle voice coil, 4 ohmsDual 2-ohm voice coils, wireable to 1 or 4 ohms
    Frequency response20–150Hz with 50–150Hz low-pass filter20–200Hz, resonance 39.1Hz
    SensitivityNot published; adjustable input sensitivity85 dB
    BuildCast aluminum enclosurePressed paper cone, high-roll foam surround, 90 oz magnet

    Price history

    $99.95$71.99
    Oct 29Nov 5
    • SS8P: lowest $86.35 on Oct 29 at Amazon; $99.95 on Nov 2.
    • NVX NSW82v3 8" Car Subwoofer: lowest $71.99 on Nov 5 at eBay.

    Prices at every store

    SS8P

    • RockvilleCheck price at Rockville
    • Audio SavingsCheck price at Audio Savings
    • eBayCheck price at eBay
    Prices and history →

    NVX NSW82v3 8" Car Subwoofer

    • Best BuyNew

      In stock

      $79.99Free shippingObserved Nov 5, 2026, 6:48 PM
      Visit store
    • eBayNew

      In stockSold by www-sonicelectronix-com

      $79.99Free shippingObserved Nov 5, 2026, 6:48 PM
      Visit store
    • WalmartNew

      In stockSold by Sonic Electronix

      $79.99Free shippingObserved Nov 5, 2026, 6:48 PM
      Visit store
    • AmazonNew

      Availability unknown

      As an Amazon Associate, Deal.ai earns from qualifying purchases.

      $79.99Free shippingObserved Nov 5, 2026, 6:48 PM
      Visit store

    Also available at

    • eBayCheck price at eBay
    • WalmartCheck price at Walmart
    All 4 stores and price history →

    Specs compared

    SpecSS8PNVX NSW82v3 8" Car Subwoofer
    Peak power400 Watts800 watts
    RMS power100W RMS400 watts
    Impedance4 OhmsDual 2 ohm
    Frequency response20–150Hz20 - 200 Hz
    SensitivityAdjustable Input Sensitivity85 dB
    colorBlackBlack
    size8"8"
    Driver size8 Inches—
    Enclosure thickness2.8"—
    ConnectivityRCA—
    Low-pass filter50Hz–150Hz—
    Bass boost0–12dB @45Hz—
    Show all 40 specsShow fewer specs
    SpecSS8PNVX NSW82v3 8" Car Subwoofer
    Signal-to-noise ratio90 dB—
    Fuse rating15A—
    Weight4.99 kg—
    WaterproofNo—
    RMS Output100 Watts—
    Maximum Output400 Watts—
    Channels1.0 (surround sound channel configuration)—
    Amplification TypePWM MOSFET Power Supply, Built-in amplifier—
    Dual Voice CoilNo (Single)—
    Speaker Type

    What reviewers say

    SS8P

    • 4.8 / 561 ratings

    Rated 4.8 out of 5 from 61 ratings, the SS8P is well received for its size and price. Owners say it delivers deeper, cleaner bass than expected and fits neatly under seats. Complaints center on fitment in tight cars and on bass peaking near 150Hz depending on where it is mounted.

    Pros
    • Sound quality and clarity for the size and price
    • Slim design fits securely under most seats
    • Easy installation
    • Sturdy cast aluminum build, not cheap plastic
    Cons
    • Bass can peak around 150Hz depending on mounting location
    • May not fit under some seats, such as a Miata
    • Installation may need an additional amp install kit and harness

    NVX NSW82v3 8" Car Subwoofer

    Owner feedback on the N-Series v3 8-inch is limited but generally positive, with buyers citing output for the size and value for money. Common complaints center on power demands and the lack of a grille.

    What people mention
    • OutputPraisedOwners say it plays louder than expected for an 8-inch driver in a small sealed box.
    • ValuePraisedBuyers call it a lot of subwoofer for the money.
    • Power needsMixedSome owners note it wants a strong amplifier to hit its 400W RMS rating.
    • SurroundCriticisedA few owners question how long the foam surround will last.

    Questions and answers

    Which is better for a factory stereo?
    The SS8P. Its high-level inputs and auto-sensing turn-on let it connect to a stock head unit with no separate amp. The NVX needs an amplifier and a box.
    Which gives more bass?
    The NVX, on paper. It handles 400W RMS against the SS8P's 100W RMS, but only if you feed it a capable amp and a proper enclosure.
    Is the NVX worth the extra cost?
    It is not extra: $79.99 at Best Buy as of November 5, 2026 is below the SS8P's recent $86.35–$99.95 range. But add an amp and box and the total is far higher.
    Will the SS8P fit under my seat?
    It is 2.8 inches thick, which fits most seats. Some owners report it does not fit tight spaces like a Miata, so measure clearance first.
    Can I use the NVX with the SS8P's built-in amp?
    No. The SS8P's amp is built into its enclosure and is not sold as a separate unit. The NVX needs its own amplifier.
    Which lasts longer?
    Neither has a published lifespan. The SS8P's cast aluminum body resists heat and damage; the NVX's foam surround and paper cone wear with sun and moisture over years.

    More comparisons

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    • Rockville K5 W8K5S2 8" 800 Watt 2 Ohm Car Audio Subwoofers CEA Rated Subs vs NVX NSW82v3 8" N-Series v3 Dual 2-Ohm Car Subwoofer
    • Rockville K5 W8K5S2 8" 800 Watt 2 Ohm Car Audio Subwoofers CEA Rated Subs vs SS8P
    • SS8P vs Rockville Rock Shaker 6.5" Powered Home Theater Subwoofer
    • TROPO-8 400 Watts RMS 8 Inch Car Subwoofer vs SS8P
    • SS8P vs MB Quart DS2-204
    • HYDRO-8 300 Watts RMS 8 Inch Shallow-Mount Subwoofer vs SS8P

    Buying guides that pick them

    • Best 8-inch car subwoofers under $150
    • Best powered subwoofers under $100 for home audio
    • Best powered car subwoofer enclosures
    • Best loaded car subwoofer enclosures under $250
    Subwoofer
    —
    BluetoothNo—
    Connectivity TypeWired—
    Ports &Amp; InterfacesHigh-level inputs—
    Control MethodRemote bass knob—
    Vehicle TypeCar—
    Compatible DevicesVehicle (RCA input)—
    Depth2.8 in—
    Height2.8 in—
    Width8.3 in—
    Mounting TypeUnder-seat—
    Installation TypeUnder-Seat—
    Hardware IncludedYes—
    Enclosure TypeCast-aluminum enclosure, Low-profile enclosure—
    MaterialCast aluminum, Cast aluminum (enclosure)—
    FinishGold Plated (fuse), Gold Plated (ATC Inline Fus…—
    Ports & InterfacesHigh-level inputs—
    Xmax—10.5 mm
    Resonance frequency—39.10 Hz